Live: Watch Hillary Clinton testify on Libya attack

Live: Hillary Clinton testifies on Benghazi attack

Visit NBCNews.com for breaking news, world news, and news about the economySecretary of State Hillary Rodham Clinton is facing tough questioning in her long-awaited congressional testimony about the assault on the U.S. diplomatic mission in Benghazi, Libya, that killed Ambassador Chris Stevens and three other Americans. Watch live above and read more about the attack and the political issues surrounding it.